WITNESS: Josefine Lundgren called police after seeing the footage online

Another unnamed member of the closed group told local media: “The first thing you think is ‘How can you do such a thing to a girl? And how can you do it live when you know that you are going to go there?'

“I think of course it is screwed – totally sick.”

The woman was apparently close to being unconscious when the men set upon her in the town of Uppsala, near capital Stockholm.

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LOCATION: A map showing Uppsala in Sweden

Three people have been arrested after the shocking incident, on Saturday night.

Detectives are now examining the apartment where the alleged attack took place.